Conventions are not necessary to win. In an intriguing experiment; a group of top pros, led by Brazilian internationalist Gabriel Chagas challenged a team led by Jeff Meckstroth - Eric Rodwell to a match. The Chagas team would use "natural" methods i.e. very few conventions; the other team could play whatever conventions they liked. The ideas was to show that natural bidding could succeed just as well as the modern conventional style. The natural team held their own, though they eventually suffered a narrow defeat.
Here are a few sequences from basic conventions that you and your partner should understand. You can assign
any meaning you prefer to these sequences, but you both should agree what that meaning is.
Our opponents had this sequence recently:
-2
-2
Another common situation:
-2N
.
A 3
is pretty intuitive, but what do other bids mean? To
maximize the benefits of conventions; it is important to not only know what the 1st bid means, but
what the follow-up bids mean as well. Knowing what sort of information further bid should show comes
with experience.My last example is not a specific sequence, but a general situation. I see a lot of confusion with interference over 1N openings. There are dozens of notrump conventions; I won't discuss the merits of any here, but there's more to it than just writing Hamilton or DONT on a convention card (as examples). Do you play the same system over weak NT? In balancing seat? By a passed hand? What are you minimum suit lengths for making a 2 suited overcall? High card range? You should know the answers to all these questions and many others as well.
Understanding the conventions you play; rather than playing more of the them will greatly improve your game.